fixup: Remind people tor_connect_outbound returns a future that yields a future

And point them to `connect_outbound` docs.

Author: tankyleo

lightning-net-tokio/src/lib.rs

@@ -477,6 +477,9 @@ where
 
 /// Routes [`connect_outbound`] through Tor. Implements stream isolation for each connection
 /// using a stream isolation parameter sourced from [`EntropySource::get_secure_random_bytes`].
+///
+/// Returns a future (as the fn is async) that yields another future, see [`connect_outbound`] for
+/// details on this return value.
 pub async fn tor_connect_outbound<PM: Deref + 'static + Send + Sync + Clone, ES: Deref>(
 	peer_manager: PM, their_node_id: PublicKey, addr: SocketAddress, tor_proxy_addr: SocketAddr,
 	entropy_source: ES,